Australian Skeptics
- Group that investigates the paranormal and pseudo-science from a responsible scientific viewpoint.

Bay Area Skeptics
- San Francisco Bay Area skeptical organization which aims to encourage rational thought and critical thinking through the use of scientific methods. Provides a blog, newsletter and information on membership.

Irish Skeptics
- Promoting science, critical thinking and the questioning of extraordinary claims. Includes information about aims, events, membership, and a forum.

The James Randi Educational Foundation
- Foundation headed by professional magician exposes psychics, faith healers, and such. Offers a million dollar reward for proof of occult, psychic or supernatural powers.

The New England Skeptical Society
- U.S. regional organization dedicated to the promotion of science and reason, particularly the investigation of paranormal and pseudoscientific claims.

New Mexicans for Science and Reason
- Non-profit group promoting science, the scientific method, rational thinking, and the critical examination of extraordinary claims. Includes articles and information about their activities.

New Zealand Skeptics
- Dedicated to increasing public awareness of the dangers and inanities of pseudoscience and bogus paranormal claims.

North Texas Skeptics
- An organization devoted to promoting the use of science and rational thinking in viewing the world. Features events, newsletter, cartoons, and articles.

NUI Galway Skeptic Society
- Student organization at the National University of Ireland, Galway. Includes articles and information about events.

Ottawa Skeptics
- Aims to promote the use of the scientific method, critical thinking and rational thought in the Ontario community. Provides news, articles and information on membership and events.